JP2887143B2 - Equipment for measuring and controlling the temperature and / or pressure respectively - Google Patents

Abstract

PCT No. PCT/SE91/00024 Sec. 371 Date Jul. 10, 1992 Sec. 102(e) Date Jul. 10, 1992 PCT Filed Jan. 15, 1991 PCT Pub. No. WO91/10852 PCT Pub. Date Jul. 25, 1991.A combined control and regulating valve (1) having a housing (2) with an inlet (3) and an outlet (4) as well as a partition (5) between said inlet and outlet and having a seat (6) designed for an interaction with a main valve body (7), which is adjustable from outside. Said inlet and said outlet are connected to one measuring nipple each (31-39 and 41-49 respectively) for the measurement and the control of temperature and/or pressure. One of the measuring nipples (41-49) is designed as a multiple function nipple (50) having a cutt-off-function designed to interact with a seat (53) in a passage (40), which receives said nipple. In a housing neck (55), which encloses said nipple, are access openings (56) disposed, through which e.g. water can be discharged or filled, when said nipple is in its outer screwing position. Said neck is enclosed by a completely closed casing (57) or a casing (57') having a connection (60), which casing is retained by means of a nut (66) screwable on said neck, said nut having an opening (67), through which the outer end of said measuring nipple projects, at which end the nipple is provided with an inner insertion and control opening (38) as well as a cover (37), which covers said opening.

Description

Description: TECHNICAL FIELD The present invention relates to a device, in particular to a combined control and regulating valve for liquids according to the preamble of claim 1.

BACKGROUND OF THE INVENTION Valves of this kind are used, for example, in water supply systems as well as in heating and cooling systems, and are capable of regulating and shutting off liquid flow, measuring pressure differences, discharging and / or filling liquid, or measuring temperature. Designed for Preferably, such a valve is designed such that the liquid flow can be preset, for example, by means of a handle which is manually adjusted or driven by an electric motor.

The valves conventionally used for this purpose are often very complicated and expensive to manufacture, assemble and install and operate. Also, in general, multiple functions are not concentrated in one valve structure, and various functions are distributed in an inconvenient manner, which means that these valves are often difficult to access. Being installed makes it difficult to access at least some or certain parts of such valves. In addition, there is a great risk of leakage, and above all, it is difficult or impossible to utilize this conventionally known valve for various combinations of purposes and various conceivable facilities. It was difficult to correspond easily.

Such a previously known valve is illustrated in EP-A-02221464, in which the various functions are described as above without special illustration or explanation. European Patent Application Publication (A1) No. 0153
No. 427 is a typical example in which a measurement connector and a branch / merge connector are separately provided (FIG. 1). Despite the common basis for these functions, i.e. connectors, GB 1110157 is also an example, where one connector branch incorporates a shut-off or throttle valve, Another connector branch can be connected to an arbitrary device.

DISCLOSURE OF THE INVENTION The main object of the present invention is to eliminate as much as possible the disadvantages mentioned above and to develop an improved combination control and regulating valve, which valve has, above all, excellent flexibility and It is distinguished by the possibility of combination and adjustment and the ease of handling, in particular aimed at reducing or eliminating the dangers of incorrect results and erroneous applications as a whole. It is another object of the present invention to generally develop the state of the art and to propose a generally useful valve with a long service life and reliable function.

These objects are obtained by designing a device of the type described at the outset in the manner mainly described in the characterizing part of claim 1.

Additional features and advantages of the present invention are set forth in the following description with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention, which are not intended to be limiting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an axial longitudinal section showing a combined control and regulating valve according to the invention; FIG. 2 is an axial longitudinal section of another design embodiment of a part of the valve shown in FIG. FIG. 3 is an axial longitudinal section view of the device according to the invention as forming or connected to a part of the medium flow path, FIGS. FIG. 3 is a longitudinal sectional view showing various examples of connection to a special embodiment according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION The valve shown in FIG.
The valve 1 comprises a housing 2, which has a medium flow path 73 having an inlet 3 and an outlet 4, these inlets and outlets may of course have their functions reversed. A main valve seat 6 is provided in the partition wall 5 between the inlet and the outlet, and the main valve body 7 cooperates with the main seat. The main valve body 7 is attached, for example, to the inner end of an outer spindle 8, and the outer end of the outer spindle is attached, for example, to an adjustment handle 9, which comprises a handle screw 10, an O-ring 11, a display ring 12,
Digit theory 13, Preset screw 14, Inner spindle 1
5, Screwed casing 16, Lock ring 17, Packing box packing 18, Plate 19, Packing box nut
20, a packing holder 21, a box-type packing 22, a top piece 23, a packing 24, a cone 25, a seal ring 26, and a connection joint 27 for the top piece. This part of the valve is mainly
This is based on the apparatus described in the specification of No. 448651, and therefore, further details are omitted. Of course, other types of adjusting means can be used, for example, an electric motor (not shown).

The connecting joint 27 is provided with an annular passage 28, which is opened inward, communicates with the outlet 4 through the passage 29, and further communicates with the through hole 30. Through hole 30
Communicates on the other hand with a threaded hole 31 which is preferably located between the inlet 3 and the joint 27 in the housing 2.
Of the housing ends as an open end and is closed inward of the housing. The nipple 74 having the measuring section 32 is screwed into the screw hole 31 and the nipple 74
Includes an adjustment ring 33, a seal body 34, an anchor 35, a seal packing 36, a cover nut 37, a nipple neck hole 38, and an insertion hole 39, which are used to measure pressure and / or temperature. For insertion of a measurement probe designed in

The inlet 3 communicates with the multifunctional nipple 50 through the through hole 40,
The multifunctional nipple preferably has a measuring part 42 designed as shown generally as well as the components 31-39. Accordingly, in this part of the drawing, reference numerals 41 to 49 indicate parts corresponding to reference numerals 31 to 39. However, in this case,
The inner end 51 of the measuring section 42 is preferably provided with a bevel 52 over the entire peripheral surface thereof, and has a valve body function for sealing or closing the valve seat 53. The sheet 53
The inside of the through hole 40 in which the measurement nipple 42 is fixed is provided with a sharp step preferably at a transition portion from a smooth portion on the inside to a thread portion 54 on the outside. .
The interaction between the edge of this sharp step and the beveled surface provides a satisfactory sealing effect and is present without the use of special seals or packing, especially if the sharp edge is slightly deformed. Possible slight irregular shapes are easily and easily removed.

The shut-off mechanism of the measuring section 42 is a novel feature according to the present invention, that is, at least a part of the inner thread 54 on the outer side of the inner surface of the through hole 40 is located in the neck 55, and this neck is Preferably projecting from the housing 2 in the same plane as the joint 27 and the parts 31 to 39, the neck is provided with a plurality of openings 56 (see FIG. 2), which therefore pass through the internal thread of said outer part. It is provided. When the measuring section 42 is screwed outwardly such that its external threads expose at least some of the openings 56, a liquid can flow between the inlet 3 and the outside of the neck 55. This neck 55
Normally closed casing 57 with end packings 58 and 59 or casing 57 'with connection 60 (FIG. 2).
Is enclosed in a closed shape. When using the casing 57 which is closed all around (FIG. 1), there is no discharge and injection function of the multifunctional nipple. In the example shown in FIG. 2, the connection of a casing 57 'rotatably mounted
60 has at its free end an external thread 61 on which a cover nut 64 with an internal thread 62 and a packing 63 is screwed, thus connecting a filling or discharging hose (not shown). Removable to do. In these two cases, the outer end of the casing is fitted with a nut 66 with an internal thread 65 on the external thread of the neck 55.
It is sealed by screwing it over 75, but at this time the packing 58 and the packing 59 are also compressed to obtain a complete seal with the outside outside the neck. The nut 66 is provided with a central access opening 67 into which an O-ring 69 is inserted into a groove 68 for mutual sealing with the externally threaded end of the measuring part, the externally threaded end sliding. Mounted in the access opening with a fit. However, the external thread portion of the nipple is configured not to pass through the opening 67.
The nipple can be screwed in both inward and outward directions because its hole 48 can be fitted with a non-circular, for example hexagonal, hexagonal wrench (not shown). In this way, for example, it is not necessary to remove the nipple when injecting or discharging liquid, and the components 60-63 can be fitted with a hose or the like before the nipple is screwed to open the flow. Typically, the outer end of the nipple with external threads 70 is sealed with a cover nut 47 with internal threads 71. Cover nuts 37, 47
Is a flexible, preferably scored, probe, e.g., designed to measure temperature and / or pressure, reaching holes 38,48 and 39,49 and inlet 3 and outlet 4, respectively. It is temporarily removed when inserted through the seal bodies 34, 44. Further, a hinge-shaped anchoring device 35 made of a plastic material can anchor the cover nut to the outer end of the nipple so that the removed cover nut does not drop. The cover nut 37 need not have any primary sealing function. The seal body 34 is designed mainly for external sealing. If the seal body can leak, of course, the cover nut has a sealing function. Due to the above and illustrated features of the present invention, it is possible in part to replace the full-closed casing with a casing with connections 60 without draining the fluid from the system, thus making the system without any restrictions. It can be kept operating. It is not necessary to close or open any other valves, only the measuring
It is sufficient to check that is in the blocking position shown in the figure, in which it is possible to remove the nut 66 and the cover nut 47 without losing the sealing function. Despite some of these advantages, neither valve needs to be opened or closed to gain access to the function of the nipple as a control and measurement element, respectively. The casing 57 'with the connecting part 60 can be steplessly rotated to a desired connecting position within a movable range of at least about 300 degrees. Of course, a multifunctional nipple designed as shown and connected to the inlet may alternatively be connected to the outlet, or two such nipples may be connected to the inlet and outlet. In special cases, the through-hole 30 may communicate with the through-hole 40 via a special shut-off valve (not shown). in this case,
A single multifunctional nipple is sufficient, preferably a nipple for simple measurement no longer has to be used. It is also possible in this case to use two shut-off valves for the inlet 3 and the outlet 4, thus simultaneously measuring the pressure and / or temperature on either or both sides of the main valve seat 6 It is possible to do.

In FIG. 4, according to the present application, the valve housing comprises:
Overlying the main valve seat 6, it is covered by a casing 100 in the direction of the valve body attachment, the wall 101 of which circumferentially terminates at the valve housing wall, in which an outlet opening 102 is formed. This casing is dropped into a groove 103 outside the main valve seat 6, and an inwardly facing flange 104 is formed on the side facing the valve body.
Of the valve body side. The other end of the casing has an inner bevel 105 as much as possible to facilitate tightening of the valve top piece.

In this example, the through hole 30 is provided at the center of the screw hole 31 and on the axial extension to the groove 106, which extends in the axial direction of the casing and extends below the shoulder of the flange 104. The nipple extends around the flange to reach an opening 107 on the opposite side of the main valve seat in the radial direction with respect to the nipple. This opening allows, for example, one nipple to receive a pressure signal.

The casing is fixedly secured within the valve housing in a known manner, so that the opening 102 does not change position unless deliberate. This casing can be made of metal or plastic material. The casing can also form part or the entire seat, if desired. Opening 107 is preferably relatively compact and not slotted.

As another embodiment, as shown in FIG. 5, the opening 107 'may be disposed in the thick portion 108 of the main valve seat 6 and formed as an outer end of a passage 109 penetrating through the thick portion. This passage communicates with the groove 103 at its inner end.

Although not shown, according to another embodiment, for example, in order to eliminate the above-mentioned opening from the periphery of the main valve seat, such a thick part is formed with respect to both nipples through the opening 102 or the casing material beyond the main valve seat. And the casing material can be supported by the central partition 5.

The embodiment shown in FIG. 6 is most advantageous as far as manufacturing is concerned, since drilling of special through holes 30 can be avoided, in which case
Such a through hole is replaced by an extension of the screw hole 31.
The through-hole abuts at the bottom with a threaded hole into which the top piece of the valve is screwed, ie, an opening 110 is formed at right angles to the bottom of the through-hole, the inner step. The free access of the opening to the chamber between the valve toppiece and the valve cone is suitably ensured by a groove 111, which simply extends through all the threads in the bore for the valve toppiece. It can be achieved in the form of an axial groove, whose manufacture is particularly simple. The part of this groove covered by the valve top piece is
Of course, it does not function for any purpose. Opening 110
Only the part between the valve toppiece and the valve cone which borders on is used in this space to eliminate the effects of unnecessary and disturbing screws, ensuring that the pressure signal is freely available.

According to another embodiment which is not shown, the shape of the through hole shown in FIG. 3 described above can be combined with the valve of the embodiment of FIGS.

Claims (10)

(57) [Claims] An apparatus (1) for measuring and controlling the temperature and / or pressure in a gas or liquid medium flow path (73), respectively, said flow path being provided in a housing (2). And is connected to at least one measurement and control nipple (50 or 74) through a through hole (30, 31, 40, 41), and the nipple is inserted into the through hole from outside. Wherein at least one of the nipples is further configured as a multifunctional nipple for discharge / injection and air bleeding, respectively, as an additional function, and a housing neck (55) surrounding an outer portion of the through hole is provided around a casing (57). Or 57 '), with a transverse opening (56) surrounded by a gap and formed in the neck to communicate with the interior of the casing, such that the casing completely surrounds the neck. A measurement control device, which is either closed or provided with a connection (60) for said additional function. 2. The device is configured as a combination control and regulating valve, wherein said medium flow path (73) has an inlet (3) and an outlet (4) and cooperates therewith with a valve body (7). A partition (5) having a main valve seat (6) is formed,
The valve body is mounted on the inner end of a valve spindle (8, 15) that can be driven and / or preset from the outside, and the multifunctional nipple (50) is inserted through the through hole (40, 41) through the inlet (3, 4). 2), wherein the further second nipple (74) is configured as a multi-function nipple or a single-function nipple connected to the outlet (4). 3. A multi-function nipple (50) or a plurality of nipples (50 or 74) is provided, at least one of said nipples being connected to a different region of said medium flow path (73), for example an inlet (3). 3. The measurement control device according to claim 1, which is connected or connectable to the outlet (4), one of these connections being provided for disconnection. 4. A multi-function nipple (50) is configured as a shut-off valve, and an inner end (51) of the nipple is connected to the through holes (40, 4).
1) a peripheral bevel (52) configured to cooperate in a sealing or blocking manner with the valve seat (53) therein and acting as a valve body, said valve seat (53) being 4. A sharp step according to claim 1, wherein a transition from the inner smooth portion of the bore to the outer threaded screw portion of the nipple is provided. Item 2. The measurement control device according to item 1. 5. The casing (57 or 57 ') is axially limited by end packings (58,59);
The measurement control device according to any one of claims 1 to 4, wherein the casing is rotatably provided at least in a limited range. 6. A casing (57 ') having a connection (60).
However, a cover nut (64) having an internal screw (62) and a packing (63) is screwed on the external screw (61) at an end of the connection portion, and the cover nut is The measurement control device according to claim 1, wherein the measurement control device is detachable for connection of a discharge or injection hose. 7. The casing (57 or 57 ') is sealed by a nut (66) provided with an internal thread (65).
The nut is threaded onto an external thread (75) of the neck (55), and the end packings (58, 59) are configured to be compressed into a sealed state when the nut is tightened. The measurement control device according to claim 5. 8. A central access opening (6) in said nut (66).
7) is provided, and an O-ring (69) that interacts with the external threadless portion of the multifunctional nipple (50) in a sealed state is inserted into the groove (68) on the inner surface thereof, and the external threadless portion is Mounted in the access opening by a sliding fit,
The measurement control device according to claim 7, wherein an external screw of the nipple is configured to be unable to pass through the access opening. 9. The multifunctional nipple (50) is screwable inward and outward respectively by a non-circular hole (38) designed as a hexagonal hole for insertion of a hexagonal wrench, for example.
This makes the nipple non-removable when injecting or discharging fluid, and the outer end of the nipple with external threads (70) can be sealed by the cover nut (37), which usually has internal threads (71). The cover nut is temporarily removable to allow, for example, a measurement probe to be inserted through the seal body (34) in the nipple, the seal body being provided with a cut (72); The measurement control device according to claim 8, wherein the cover nut (37) is anchored on the outer end of the nipple by a hinge-like anchor (35) made of a plastic material or the like. 10. The through hole (31 or 40, 41) for holding a nipple (50 or 74) is provided at a downstream portion of the medium flow path (73) through an edge or a corner, or In the control and regulating valve, a linear axial direction is provided for the communication of the medium flow path to the position downstream of the main valve seat (5) with the aid of inserts or shields via connection grooves. The measurement control device according to claim 1, wherein the measurement control device is extended as a communication part.